Islamic-Javanese mysticism believes that humans can find God (in union with Him) through wisdom. The concepts are similar to Sufism, such as Ittiḥād, ḥulūl, and Waḥdat al-wujūd. This study aims to discover the formulation of Islamic-Javanese mysticism teachings in Serat Nitisruti by Prince Karanggayam. The primary data were obtained from Javanese manuscripts, namely Serat Nitisruti, compiled by Prince Karanggayam (1591-1612 AD), from the early days of Pajang to the end of Pajang (controlled by Mataram). Prince Karanggayam was the first poet and an Islamic preacher in Pajang. This study applies the cultural analysis of Koentjaraningrat. The results show that Islamic-Javanese mysticism in Serat Nitisruti has four stages; purification of kapti(heart), atunggal marang Gusti (union with God), nugrahaning widhiand the last is application stage i.e., managing the world or doing real actions. If someone can reach the third stage, he deserves to be called waskitha. However, if those stages are not completed with the application stage, the result will be imperfect. Therefore, Islamic-Javanese mysticism has its own reasoning and logic that is in accordance with Javanese society at that time, namely, ngelmu kanthi laku, knowledge must be accompanied by real actions.

Contribution: This study uncovers the teachings of the spiritual journey based on local wisdom among Javanese Muslims, as contained in Serat Nitisruti, which was compiled by Prince Karanggayam.